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Title:
HARDWARE EXCLUSIVE CONTROL SYSTEM
Document Type and Number:
Japanese Patent JPH02144625
Kind Code:
A
Abstract:

PURPOSE: To execute much more existing applications in a mode for driving a single task operating system by including a function capable of executing an existing application for directly controlling hardware in the title system.

CONSTITUTION: An interchangeable mode is a mode for driving an existing single task operating system as a task to allow a multitask operation system to execute much more applications and a normal mode is a mode other than the interchangeable mode. In the multitask operation system, the interchangeable mode and the normal mode are driven. During the period of plotting a graphic without using a graphic controller in the normal mode, a plotting speed is slightly delayed, but the graphic can be plotted by using the graphic controller in the interchangeable mode.


Inventors:
HARA TAKESHI
Application Number:
JP1988000298538
Publication Date:
June 04, 1990
Filing Date:
November 25, 1988
Export Citation:
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Assignee:
NEC CORP
International Classes:
G06F9/06; G06F9/46; G06F9/52; G06T1/00; (IPC1-7): G06F9/06; G06F9/46; G06F15/62



 
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